Drawing board



FIG. 1 is a front view of a drawing board;

FIG. 2 is a back view of the drawing board;

FIG. 3 is a left side view of the drawing board;

FIG. 4 is a right side view of the drawing board;

FIG. 5 is a top view of the drawing board;

FIG. 6 is a bottom view of the drawing board; and,

FIG. 7 is a perspective view of the drawing board.

The broken lines depict portions of the article that form no part of the claimed design. 

CLAIM The ornamental design for a drawing board, as shown and described. 